Iron nitride films produced by arc deposition of iron in a nitrogen atmosphere

Abstract

Iron nitrides with a high nitrogen content are metastable and can be prepared in the form of fine particles or as a film. An arc discharge of iron metal in a reactive atmosphere provides a convenient method to produce iron-based films. In this study, iron nitride films were formed on an aluminum substrate by arc deposition of iron in a nitrogen atmosphere under a controlled nitrogen flow rate (10–30 sccm). The samples were analyzed by transmission Mössbauer spectroscopy and X-ray diffraction. When the temperature of the aluminum substrate during deposition was maintained at 298 K, ε-Fe3-2N was obtained for nitrogen flow rates in the range 20 to 30 sccm. When the aluminum substrate was heated to 573 K during deposition with nitrogen flow rates of 15 to 30 sccm, a highly crystalline ε-Fe2N film was formed.

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Correspondence to Kazuki Hamazaki.

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This article is part of the Topical Collection on Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME2019), 1-6 September 2019, Dalian, China

Edited by Tao Zhang, Junhu Wang and Xiaodong Wang

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Hamazaki, K., Kobayashi, Y. & Yamada, Y. Iron nitride films produced by arc deposition of iron in a nitrogen atmosphere. Hyperfine Interact 241, 4 (2020). https://doi.org/10.1007/s10751-019-1682-8

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Keywords

  • Iron nitride
  • Film
  • Arc deposition
  • Mössbauer spectroscopy
  • X-ray diffraction